Evidence map›Paper›PMID 34560842›Full record

ArticleBMC nephrology2021

Impact of the relationship between hemoglobin levels and renal interstitial fibrosis on long-term outcomes in type 2 diabetes with biopsy-proven diabetic nephropathy.

Miho Shimizu, Kengo Furuichi, Shinji Kitajima, Tadashi Toyama, Megumi Oshima, Hisayuki Ogura, Koichi Sato, Shiori Nakagawa, Yuta Yamamura, Taro Miyagawa and 7 more

Open access · goldAbstract read
In one paragraph

Article in BMC nephrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.0field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 15 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors at 4 institutions in 1 country.

Miho ShimizuDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan. mshimizu@staff.kanazawa-u.ac.jp.
Kengo FuruichiDepartment of Nephrology, Kanazawa Medical University, Uchinada, Japan.
Shinji KitajimaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Tadashi ToyamaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Megumi OshimaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Hisayuki OguraDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Koichi SatoDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Shiori NakagawaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Yuta YamamuraDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Taro MiyagawaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Akinori HaraDepartment of Hygiene and Public Health, Graduate School of Medical Sciences, Kanazawa University, Kanazawa,, Japan.
Yasunori IwataDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Norihiko SakaiDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Kiyoki KitagawaDivision of Internal Medicine, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan.
Mitsuhiro YoshimuraDivision of Internal Medicine, Noto General Hospital, Nanao, Japan.
Hitoshi YokoyamaDepartment of Nephrology, Kanazawa Medical University, Uchinada, Japan.
Takashi WadaDepartment of Nephrology and Laboratory Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, 920-8640, Kanazawa, Japan.
Kanazawa University · JPKanazawa Medical University · JPKanazawa Medical Center · JPNoto General Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProgression of renal anemia has been shown to be associated with advanced renal tubulointerstitial lesions. This retrospective study investigated the impact of lower hemoglobin (Hb) levels and renal interstitial fibrosis and tubular atrophy (IFTA) on long-term outcomes in type 2 diabetes with biopsy-proven diabetic nephropathy.

methodsA total of 233 patients were enrolled. The severity of IFTA was scored according to the classification by the Renal Pathology Society. Patients were stratified according to baseline Hb tertiles by IFTA status. The outcomes were the first occurrence of renal events (requirement for dialysis or 50 % decline in estimated glomerular filtration rate from baseline) and all-cause mortality.

resultsAt baseline, 151 patients had severe IFTA. There were no patients who have been received erythropoiesis-stimulating agents at the time of renal biopsy. The severity of IFTA was the independent pathological factor of lower Hb levels. During the mean follow-up period of 8.6 years (maximum, 32.4 years), 119 renal events and 42 deaths were observed. Compared with the combined influence of the highest tertile of Hb and mild IFTA, the risks of renal events were higher for the middle tertile and for the lowest tertile of Hb in severe IFTA, whereas the risk of renal events was higher for the lowest tertile of Hb in mild IFTA. The risk of mortality was higher for the lowest tertile of Hb only in severe IFTA. There were significant interactions of tertile of Hb and IFTA in renal events and mortality.

conclusionsImpacts of lower Hb levels on long-term outcomes of diabetic nephropathy were greater in severe IFTA than in mild IFTA.

Indexed as

BiopsyDiabetes Mellitus, Type 2Diabetic NephropathiesFemaleFibrosisHemoglobinsHumansKidneyMaleMiddle AgedPrognosisRetrospective StudiesRisk FactorsHemoglobinsDiabetic kidney diseaseDiabetic nephropathyHemoglobinInterstitial fibrosis and tubular atrophyMortalityRenal events

Identifiers

PMID34560842
PMCPMC8464136
OpenAlexW3199751717

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.